(19)
(11) EP 0 090 641 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
01.08.1984 Bulletin 1984/31

(43) Date of publication A2:
05.10.1983 Bulletin 1983/40

(21) Application number: 83301758

(22) Date of filing: 29.03.1983
(84) Designated Contracting States:
DE GB NL SE

(30) Priority: 31.03.1982 US 364163

(71) Applicant: FOSTER WHEELER ENERGY CORPORATION
 ()

(72) Inventors:
  • Steward, Robert D.
     ()
  • Taylor, Thomas E.
     ()

   


(54) Fluidized bed heat exchanger


(57) A fluidized bed heat exchanger is described in which a perforate support plate (20) bears relatively lightweight absorbent material particles and relatively heavy fuel ash particles in a fluidized bed (18). The heat exchanger includes a drain (42) through which a flow of air is forced upwardly into the bed (18). The air flow is controlled such that it forms an air screen which retains the adsorbent material particles in the bed (18) but allows the fuel ash particles to fall into the drain (43) for discharge.






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